Has anyone replaced the rear hub bearing on a '18 Specialized Diverge ?
12-06-22, 09:42 PM
#1
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Has anyone replaced the rear hub bearing on a '18 Specialized Diverge ?
Has anyone replaced the rear hub bearing on a Specialized Diverge?
Do I remove the freewheel first? If so, what tool do should I use? I don't think anyone makes a hex wrench this big.
(
I'm thinking of servicing the freewheel also)
Do I remove the freewheel first? If so, what tool do should I use? I don't think anyone makes a hex wrench this big.
(
I'm thinking of servicing the freewheel also)
12-06-22, 10:31 PM
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Hex wrenches are made in huge sizes. The bike industry offerings generally stop at 11mm but a good industrial supplier should have much larger ones. Not that I think you need a 22mm one
I think you have a cassette mounted on a freehub body, not a freewheel. What I can't say from the poor images is what type of bearing your hub uses. If the hub is a cup and cone design the freehub body likely also has C&C bearings and usually these get flushed with solvent and relubed with a medium weight oil. If the FH body had cartridge bearings than these are usually just replaced, instead of cleaned and lubed. Andy
I think you have a cassette mounted on a freehub body, not a freewheel. What I can't say from the poor images is what type of bearing your hub uses. If the hub is a cup and cone design the freehub body likely also has C&C bearings and usually these get flushed with solvent and relubed with a medium weight oil. If the FH body had cartridge bearings than these are usually just replaced, instead of cleaned and lubed. Andy
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AndrewRStewart
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12-06-22, 11:54 PM
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Hex wrenches are made in huge sizes. The bike industry offerings generally stop at 11mm but a good industrial supplier should have much larger ones. Not that I think you need a 22mm one
I think you have a cassette mounted on a freehub body, not a freewheel. What I can't say from the poor images is what type of bearing your hub uses. If the hub is a cup and cone design the freehub body likely also has C&C bearings and usually these get flushed with solvent and relubed with a medium weight oil. If the FH body had cartridge bearings than these are usually just replaced, instead of cleaned and lubed. Andy
I think you have a cassette mounted on a freehub body, not a freewheel. What I can't say from the poor images is what type of bearing your hub uses. If the hub is a cup and cone design the freehub body likely also has C&C bearings and usually these get flushed with solvent and relubed with a medium weight oil. If the FH body had cartridge bearings than these are usually just replaced, instead of cleaned and lubed. Andy
12-07-22, 12:00 AM
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Cartridge bearing, just need a bearing press/extractor, where do you get the idea you need a hex wrench for that for?
12-07-22, 10:01 AM
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Most all the FH bodied and cartridge bearinged hubs I have dealt with require the FH body to be removed to gain access to the drive side axle bearing. I believe this is why the OP is talking about removing th4e FH body. Given the cartridge axle bearings I would expect that the FH body bearings are also of the cartridge type. Often these are fitted to the FH body with a tighter press fit (than what the axle/hub shell bearings have). I have found that warming the FH body in your oven (about 200* and for around 15 minutes) will help with both the removal and reinstall. However of all the bearings on a bike the FH body ones are the ones I do as little as possible. Once the FH body is removed from the hub shell (and some are LH threaded, some have the wrench engaging from the back side too) I use the end of my finger to spin the FH body bearings, one at a time, to discern their condition. Only if one or both feel rough will I go to the trouble to remove them. Andy
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